The bridge is simple and it was custom made on site by myself. It is made from 2x12 redwood boards with an arc cut to create the rise of the bridge. The the planks are 2x6 redwood attached with screws or nails with bamboo inserted between the redwood planks. The bamboo pieces are about 1.5-2" in diameter. The bamboo is nail gunned in place with 16G finish nails. Redwood is allowed to grey out, no finish treatment used. Top strips are 2" redwood ripped thin, about 3/8" thick so they can bend easily. Attached inboard about 1.5 " from the edge. Bridge width is about 3' and length is 6-7' long. Rise is about 11".